CN103517820B - The method and system of the PWTN of vehicle and control vehicle - Google Patents

The method and system of the PWTN of vehicle and control vehicle Download PDF

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Publication number
CN103517820B
CN103517820B CN201280018956.3A CN201280018956A CN103517820B CN 103517820 B CN103517820 B CN 103517820B CN 201280018956 A CN201280018956 A CN 201280018956A CN 103517820 B CN103517820 B CN 103517820B
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China
Prior art keywords
pwtn
operational mode
wheel
motor vehicles
group
Prior art date
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Active
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CN201280018956.3A
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Chinese (zh)
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CN103517820A (en
Inventor
皮特·斯泰尔斯
兰·贝弗利
肖恩·威克
拉塞尔·奥斯本
保罗·比韦尔
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Jaguar Land Rover Ltd
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Land Rover UK Ltd
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Application filed by Land Rover UK Ltd filed Critical Land Rover UK Ltd
Priority to CN201610565401.0A priority Critical patent/CN106004426B/en
Publication of CN103517820A publication Critical patent/CN103517820A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/348—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed
    • B60K17/35—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed including arrangements for suppressing or influencing the power transfer, e.g. viscous clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles
    • B60K23/0808—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles for varying torque distribution between driven axles, e.g. by transfer clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/182—Selecting between different operative modes, e.g. comfort and performance modes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/20—Reducing vibrations in the driveline
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles
    • B60K2023/085—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles automatically actuated
    • B60K2023/0858—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles automatically actuated with electric means, e.g. electro-hydraulic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/02—Clutches
    • B60W2510/0291—Clutch temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • B60W2520/105—Longitudinal acceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/06—Ignition switch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/10—Change speed gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2720/00—Output or target parameters relating to overall vehicle dynamics
    • B60W2720/40—Torque distribution
    • B60W2720/403—Torque distribution between front and rear axle

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

Embodiments of the present invention provide a kind of motor vehicles, and it has: mover device；At least the first and second one or more wheels of group；nullAnd PWTN，PWTN is operable to mover device is connected to first and second groups of one or more wheels，Make first group of one or more wheel when PWTN is in the first operational mode rather than second group of moment of torsion transmission path being attached to be derived from mover device，And first and second groups of one or more wheels are all attached to be derived from the moment of torsion transmission path of mover device when PWTN is in the second operational mode，PWTN includes the slave part in the moment of torsion transmission path for being connected to be derived from mover device by second group，Slave part includes the first and second releasable torque transmission and prop shaft，First releasable torque transmission is operable to be connected to be derived from by the first end of prop shaft the moment of torsion transmission path of mover device，Second releasable torque transmission is operable to be connected to the second end of prop shaft second group of one or more wheel，Vehicle also includes controlling device，Control device to be operable to control the first and second torque transmissions to switch PWTN between the first operational mode and the second operational mode，Make prop shaft in the first mode and be derived from the moment of torsion transmission path of mover device and second group of one or more wheel all disconnects，Wherein，When in the first mode，Vehicle is operable in response to speed to control PWTN to be switched to the second pattern from first mode.

Description

The method and system of the PWTN of vehicle and control vehicle
Technical field
The present invention relates to a kind of motor vehicles and relate to a kind of method controlling motor vehicles.Specifically Ground but nonexclusively, the present invention relates to the motor-driven of one such as all-terrain vehicle (ATV) etc Vehicle, these motor vehicles have the number being operable to change the wheel providing the moment of torsion driving vehicle Purpose PWTN.
Background technology
Known providing a kind of motor vehicles, these motor vehicles have motion-promotion force supply to vehicle Two pairs of wheels in the four-wheel drive operational mode of every pair of wheel.Motion-promotion force passes through power transmission System's supply is to wheel.
Vehicle known to some is arranged so that motion-promotion force is for good and all supplied to two pairs of wheels.Some its His vehicle be arranged so that motion-promotion force be selectively supplied to or only a pair of wheel or two right Wheel.The operable selector of driver can be positioned to allow for driver and select two-wheeled to run or four-wheel fortune OK.Some powertrain systems require that vehicle is between two-wheel drive mode and four-wheel drive pattern It is static during transformation.This system can be referred to as static disconnect/reconnect welding system.
GB2407804 discloses a kind of dynamically PWTN and reconnects device, wherein, wherein Two wheels disconnect, with PWTN, this two wheels and the PWTN occurred afterwards Reconnect and can carry out when vehicle travels.This system can be referred to as dynamic PWTN Reconnect system.System disclosed in GB2407804 uses clutch apparatus to enable to Realize dynamic PWTN to reconnect.
The purpose of embodiments of the present invention is that alleviating known dynamically power at least in part passes The shortcoming of dynamic system.
Summary of the invention
Embodiments of the present invention can be understood by referring to claims.
Each aspect of the present invention provides a kind of motor vehicles and a kind of method.
In the claimed another aspect of the present invention, it is provided that a kind of motor vehicles, this is motor-driven Vehicle has: mover device；At least the first one or more wheel of group and second group one or many Individual wheel；And PWTN, described PWTN is operable to fill described prime mover Put and be connected to described first group of one or more wheel and described second group of one or more wheel, make : when described PWTN is in the first operational mode, described first group one or more Wheel rather than described second group of moment of torsion transmission path being attached to be derived from described mover device；And When described PWTN is in the second operational mode, described first group of one or more wheel It is attached to be derived from the torsion of described mover device with described second group of one or more wheel both of which Square transmission path, described PWTN includes for being connected to described second group to be derived from described former The slave part in the described moment of torsion transmission path of motivation device, described slave part includes that first can release Put torque transmission and the second releasable torque transmission and prop shaft, described first Releasable torque transmission is operable to be connected to the first end of described prop shaft It is derived from the described moment of torsion transmission path of described mover device, the described second releasable moment of torsion transmission dress Put be operable to be connected to the second end of described prop shaft described second group one or Multiple wheels, described vehicle also includes controlling device, and described control device is operable to control institute State the first torque transmission and described second torque transmission with in described first operational mode And switch described PWTN between described second operational mode so that at described first mode In, described prop shaft and be derived from the described moment of torsion transmission path and described of described mover device Second group of one or more wheel both of which disconnects, wherein, when in described first mode, Described vehicle be operable to the speed in response to described vehicle to control described PWTN with It is switched to described second pattern from described first mode.
It should be appreciated that when prop shaft and be derived from mover device moment of torsion transmission path with And described second group of one or more wheel are when all disconnecting, though when vehicle the most in motion after It can also be substantially static for driving power transmission shaft.
It should be appreciated that the group having one or more wheel of literary composition middle finger includes that finger has only one The group of the member of individual wheel.
Fill it should be appreciated that change speed gear box, variator or miscellaneous part can be arranged on from prime mover In the moment of torsion transmission path of the slave part putting PWTN.It should be appreciated that change speed gear box Or variator is operable to the situation in PWTN is in first mode or the second pattern Lower mover device and first group of wheel and second group of wheel being disconnected, selected power passes Move the pattern being by the first releasable torque transmission and the second releasable torque transmission State determines.I.e., no matter whether variator is in moment of torsion and can be passed to first by variator In the state of group wheel or second group of wheel, PWTN pattern is all releasable by referring to first The state of torque transmission and the second releasable torque transmission determines.
In embodiments, this control device is operable to control PWTN with little in speed In or equal to the first defined threshold velocity amplitude time take the second pattern.
In embodiments, this control device is operable to control PWTN with at vehicle base The second pattern is taked when this is static.
In embodiments, this control device be configured to control vehicle with substantially static at vehicle and The second pattern taked by vehicle when being in dead ship condition.
In embodiments, mover device includes electromotor, and dead ship condition with start office The state closed is corresponding.
In embodiments, this vehicle is provided with and has " park " pattern and " neutral gear " pattern Automatic transmission, this vehicle is arranged to control PWTN to be in selected from " park " at variator The second pattern is taked time in one in pattern and " neutral gear " pattern.
In embodiments, the first defined threshold velocity amplitude is not zero.
This feature have the advantage that reduce vehicle stop and PWTN is in and can not adopt Take the risk in the configuration of the second pattern.This configuration can be such as due to releasable moment of torsion transmission dress Dentation state is occurred by the tooth put.But, by taking the second pattern at vehicle while still travelling, Reduce the first releasable torque transmission and/or the second releasable torque transmission due to tooth Tooth or similar state are unable to be connected to prop shaft mover device and/or second group The risk of one or more wheels.
In embodiments, the first defined threshold velocity amplitude is in selected from from 1 kilometer/hour to 50 Kilometer/hour, from 1 kilometer/hour to 40 kilometer/hour, from 1 kilometer/hour to 30 kilometer/ Hour, from 1 kilometer/hour to 20 kilometer/hour, from 1 kilometer/hour to 15 kilometer/hour, Public from 1 kilometer/hour to 10 kilometer/hour, from 1 kilometer/hour to 5 kilometer/hour, from 5 In/hour to 10 kilometers/hour and from least one of kilometers/hour 5 to 15 kilometers/hour In scope.
In embodiments, this control device be configured to control PWTN with in speed from first Defined threshold velocity amplitude value below rises to take first during more than the first defined threshold velocity amplitude Pattern.
In embodiments, this control device be configured to control PWTN with in speed from second Defined threshold velocity amplitude value below rises to second rule bigger than the first defined threshold velocity amplitude Determine to take first mode during more than threshold speed value.
This has the advantage that can be about the transformation occurred between first mode and the second pattern Threshold speed introduces " hysteresis ".This advantage with the risk that can reduce pattern tremor.
Pattern tremor mean vehicle within the relatively short period repeatedly at first mode and Change between two modes.Such as, if vehicle is arranged in speed when dropping to below the first setting It is converted to the second pattern from first mode, but transforms back into when speed is raised to more than identical setting To first mode, then pattern tremor can occur in the case of speed fluctuates about this setting.Car Speed is likely to be due to the speed that traffic or attempt driver keeps being similar to described setting In the case of fluctuate about described setting.
In embodiments, the first defined threshold velocity amplitude is substantially equal or smaller than 15 kilometers/hour And the second defined threshold is more than 15 kilometers/hour.
In embodiments, this control device be operable to control PWTN with speed from 3rd defined threshold velocity amplitude value below rises to take during more than the 3rd defined threshold velocity amplitude Second pattern.
In embodiments, the 3rd threshold speed value is more than first threshold velocity amplitude.
In embodiments, the 3rd threshold speed value is more than Second Threshold velocity amplitude.
In embodiments, this control device be operable to control PWTN with speed from Value more than 4th defined threshold velocity amplitude drops to take during below the 4th defined threshold velocity amplitude One pattern, the 4th defined threshold velocity amplitude is more than the second defined threshold velocity amplitude and less than the 3rd rule Determine threshold speed value.
In embodiments, when control device in response to the speed of vehicle control PWTN with When taking the second pattern, control device and be operable to control PWTN to complete in the period To the transformation of the second pattern, the length of this period is in response to the rate of change of the deceleration of vehicle.
It is the most right that this feature has the advantage that PWTN is arranged in driver Vehicle applies to take the second pattern quickly during the rate of change braking the deceleration to increase vehicle, from And guarantee to take the second pattern before vehicle stops.It reduce PWTN such as due to it The tooth of one or more clutches will not be able to correctly take the wind of the second pattern to dentation state Danger.
When the vehicle is decelerating can be faster additionally, take the second pattern to have the advantage that quickly The maneuverability that vehicle improves is enjoyed on ground.
The movement of one or more actuator is typically required to the transformation taking the second pattern completely.For Being more quickly completed this transformation, and be not compared with the situation that too fast completes this transformation, vehicle is permissible It is configured to control actuator to move quickly.
In embodiments, when control device in response to the speed of vehicle control PWTN with When taking the second pattern, Vehicle structure becomes to control PWTN to become according to deceleration in its length The increase of rate and be accomplished to the transformation of the second pattern in period of reducing.
Control PWTN to take the second pattern (with higher speed) within the shorter period There is the advantage taking the second pattern the most quickly.This have the advantage that due to The biggest second pattern of the most more quickly taking of the rate of change of deceleration, can enjoy the most when the vehicle is decelerating The vehicle maneuverability improved.It addition, also reduce vehicle to take the second pattern at PWTN The risk before stopped.
In embodiments, this control device is configured to the increase according to deceleration rate of change and increases First threshold velocity amplitude.
In embodiments, first group of wheel includes that pair of wheels and first mode are corresponding to logical Cross electromotor and drive the two-wheel drive operational mode of described pair of wheels.
In embodiments, second group of wheel includes second pair of wheel, and the second operational mode pair Should be in four-wheel drive operational mode.
Alternatively, second group of wheel includes pair of wheels, second pair of wheel and the 3rd pair of car Wheel, and the second operational mode is corresponding to six wheel drive operational modes.
Alternatively, at least one in first group of wheel and second group of wheel includes multipair wheel.
In embodiments, mover device includes at least in explosive motor and motor Person.
In a claimed aspect of the present invention, it is provided that a kind of side controlling motor vehicles Method, described method includes: providing a kind of motor vehicles, described motor vehicles have PWTN, Described PWTN is operable to the mover device of described vehicle is connected to first group one Individual or multiple wheels and second group of one or more wheel so that: when described PWTN is in Time in first operational mode, described first group of one or more wheel rather than described second group one or Multiple wheels are attached to be derived from the moment of torsion transmission path of described mover device；And when described power When power train is in the second operational mode, described first group of one or more wheel and described second Organize one or more wheel both of which and be attached to be derived from the moment of torsion transmission path of described mover device, Described PWTN includes that slave part, described slave part include the first releasable moment of torsion transmission Device and the second releasable torque transmission and prop shaft, the described first releasable moment of torsion Transmitting device is operable to be connected to the first end of described prop shaft to be derived from described former The described moment of torsion transmission path of motivation device, the described second releasable torque transmission is operable to Become and the second end of described prop shaft is connected to described second group of one or more wheel, institute The method of stating include controlling described first torque transmission and described second torque transmission with Described PWTN is switched, thus between described first operational mode and described second operational mode In described first mode, the described torsion making described prop shaft with being derived from described mover device Square transmission path and described second group of one or more wheel both of which disconnect, and described In second pattern, described prop shaft is connected to be derived from the described moment of torsion of described mover device Transmission path and described second group of one or more wheel, described method includes in response to described car Speed control described PWTN to be switched to described second mould from described first mode Formula.
In the claimed aspect of the present invention, it is provided that a kind of motor vehicles, these motor vehicles Have: prime mover；At least the first and second one or more wheels of group；And PWTN, This PWTN prime mover is connected to first group of one or more wheel and second group one or Multiple wheels so that when PWTN is in the first operational mode first group one or more Wheel is by prime mover driven and when PWTN is in the second operational mode second group one Individual or multiple wheels are additionally driven by prime mover, and this PWTN includes auxiliary power transmission System, this aid powertrain includes releasable torque transmission, this releasable moment of torsion transmission dress Put and be operable to second when power transmission ties up to change between first mode and the second pattern Organizing one or more wheel and be connected to prime mover, wherein, when in the first mode, vehicle can It is operable to respond to the speed in vehicle to control PWTN to take the second pattern.
Can provide a kind of control motor vehicles with the first operational mode and the second operational mode it Between change method, in the first operational mode, prime mover of vehicle is arranged to drive first group one Individual or multiple wheels, and in the second operational mode, prime mover is arranged to drive first group one Or multiple wheel and also drive second group of one or more wheel, the method includes in response to vehicle Speed control PWTN to take the step of the second operational mode.
The method may include steps of: control PWTN with in speed equal to or less than the The second pattern is taked during one defined threshold velocity amplitude.
The method can include controlling PWTN to take the second mould when vehicle is substantially static Formula.
The method can include that controlling PWTN is in and vehicle substantially static at vehicle The second pattern is taked time in car-parking model.
The method may include steps of: controls vehicle with at stationary vehicle and tail-off Time take the second pattern.
The method may include steps of: controls vehicle with the speed change in stationary vehicle and vehicle Device takes the second mould when being in a kind of pattern in " park " pattern and " neutral gear " pattern Formula.
Alternatively, the method may include steps of: controls PWTN with at vehicle Speed takes the second pattern when equaling to or less than the first defined threshold velocity amplitude of non-zero.
This feature have the advantage that reduce vehicle stop and PWTN is in and can not adopt Take the risk in the configuration of the second pattern.This configuration can be such as due to releasable torque transmission Tooth dentation state is occurred.
The method may include steps of: controls vehicle with the speed at vehicle selected from public from 1 In/hour to 50 kilometers/hour, from 1 kilometer/hour to 40 kilometer/hour, from 1 kilometer/little Up to 30 kilometers/hour, from 1 kilometer/hour to 20 kilometer/hour, from 1 kilometer/hour to 15 kilometers/hour, from 1 kilometer/hour to 10 kilometer/hour, from 1 kilometer/hour to 5 kilometer / hour, from 5 kilometers/hour to 10 kilometers/hour and from 5 kilometers/hour to 15 kilometers/little The second pattern is taked time in the scope of at least one in time.
The method may include steps of: controls vehicle with fast more than the first defined threshold in speed First mode is taked during angle value.
Alternatively, the method may include steps of: controls vehicle to exceed ratio the in speed The second pattern is taked during bigger the second defined threshold of one defined threshold.
First defined threshold velocity amplitude can be substantially equal or smaller than 15 kilometers/hour, and second Defined threshold can be more than 15 kilometers/hour.
When in the first mode, the method can include controlling PWTN with in response to vehicle The speed of deceleration rate of change take the second pattern.
The method can include that controlling PWTN increases with the increase according to deceleration rate of change Big speed takes the second pattern.
The method can include that controlling PWTN increases with the increase according to deceleration rate of change Big speed takes the second pattern.
In scope of the present application, it is contemplated that in the preceding paragraphs, in the claims and/or The various aspects of the application, embodiment, example and the alternative of statement in description below and accompanying drawing Case and particularly feature can independently or be used in its any combination of mode.Such as, What the feature that describes in conjunction with embodiment was the most incompatible otherwise can be applied to all realities Execute mode.
Accompanying drawing explanation
Now with reference to accompanying drawing, embodiments of the present invention are described, wherein:
Fig. 1 is the schematic diagram of the vehicle according to embodiments of the present invention；
Fig. 2 is to make during a part for the drive cycle of vehicle according to the embodiment of the present invention The speed of function and the curve chart of PWTN pattern for the time；And
Fig. 3 is a part of phase of the drive cycle at the vehicle according to another embodiment of the present invention Between as the speed of function of time and the curve chart of PWTN pattern.
Detailed description of the invention
Fig. 1 shows the PWTN 5 of motor vehicles 1 according to the embodiment of the present invention. This PWTN 5 is connected to explosive motor 11 by change speed gear box 18 and is had a pair front-wheel 12,13, slave part 10 and pair of rear wheels 14,15.
PWTN 5 is arranged to be supplied to this power transmission optionally through change speed gear box 18 Be 5 power transmit to only front-wheel 12,13(at also referred to as two wheel drivings from explosive motor 11 Under first operational mode of dynamic operational mode) or be simultaneously transmit to front-wheel 12,13 and trailing wheel 14, 15(is under the second operational mode of also referred to as four-wheel drive operational mode).
Power passes through power transmission by means of clutch 17, change speed gear box 18 and a pair front propeller shaft 19 It is 5 to transmit to front-wheel 12,13 from explosive motor 11.
Power is transmitted to trailing wheel 14,15 by the slave part 10 of PWTN 5.Slave part 10 have power transfer unit (PTU) 24, and this PTU24 has and is operable to slave part The final drive shaft (or prop shaft) 23 of 10 is connected to the power transmission clutch of change speed gear box 18 (PTC) 22.Prop shaft 23 then be attached to be operable to couple prop shaft 23 Rear differential mechanism 30 to inter-axle shaft 26.
Rear differential mechanism 30 has a pair clutch 27, and rear differential mechanism 30 is operable at needs four By this, prop shaft 23 is connected to inter-axle shaft by clutch 27 during wheel drive operational mode 26。
PWTN 5 has the controller 40 being arranged to control the operation of PTU24 and clutch 27. When needs four-wheel drive operational mode, controller 40 is arranged to close PTC22 and close differential The clutch 27 of device 30.
In the embodiment of figure 1, PWTN 5 is configured to be converted to four from two-wheel drive mode Wheel drive mode, in this four-wheel drive pattern, PTC22 and differential clutch 27 are according to control State S of input 45dsAnd close.Control input can be switched by operator or other controls are defeated Enter device to provide.But, control switching in of input 45 and can be not controlled by device 40 in some cases Consider.Therefore, virtual condition S of PWTN 5aWith state SdsMay be different.State " Sa=0” And state " S corresponding with the first operational modea=1 " corresponding with the second operational mode.
In some embodiments, do not control to input 45 to be arranged for selecting two-wheel drive fortune Row or four-wheel drive run.Definitely, vehicle is operable to according to basic special by controller 40 The control signal produced switches between two-wheel drive mode and four-wheel drive pattern.
In the present embodiment, PWTN 5 is configured to the speed v of no matter when vehicle and drops to Threshold value v1Hereinafter four-wheel drive operational mode is the most automatically taked.When speed rises to v1Time above, Unless controlled input 45 to be set to that request four-wheel drive pattern or existence need four-wheel drive pattern to protect Holding other situations of joint, otherwise PWTN automatically takes two-wheel drive mode.
Such as, by controller 40(or other vehicle control devices) such as " snowfield/ice face " that perform The particular vehicle program of landform responder etc may need PWTN 5 regardless of vehicle 1 How speed is held in four-wheel drive pattern.
The operation of the PWTN 5 of the embodiment of Fig. 1 is illustrated by the curve chart of Fig. 2.This curve Illustrate when the speed v of vehicle is from first threshold speed v1Above speed drops to v1Speed below And rise back to v subsequently1The reality of the PWTN 5 of the function as time t during above speed Border state Sa.Run through the whole shown period, the state of the PWTN controlling input request be choosing Fixed state Sds=0。
When speed is at v1Time above, unless controller 40 additionally needs as mentioned above, otherwise power passes Dynamic be 5 state SaIt is set as zero corresponding with two-wheel drive operational mode.When the speed v of vehicle exists Time t1Place drops to v1Time following, controller 40 automatically controls PWTN 5 to take four-wheel Drive operational mode (Sa=1).At time t2Place, the speed of vehicle rises to v1Above and control Device automatically controls PWTN 5 to readopt two-wheel drive operational mode.
In an alternative embodiment of the present invention, controller 40 is configured to when speed rises to ratio First threshold v1Bigger Second Threshold v2Time above rather than when speed only rises to v1Time above, from Control PWTN 5 dynamicly and take two-wheel drive mode to leave four-wheel drive pattern.
Fig. 2 also show the operation of vehicle according to this embodiment.Can be observed, Speed is at time t2More than v after '2, and dotted line D shows when speed v is more than v2Shi Erfei works as Speed is more than v1Time transformation from four-wheel drive pattern to two-wheel drive mode.
It should be appreciated that use two different threshold speeds control power transmission tie up to pattern it Between the switching advantage with the risk that can reduce pattern tremor (chattering).
It should be appreciated that the risk of pattern tremor is relatively big when using single threshold speed, be because of In speed around v1Be likely to occur in the case of fluctuation between first mode and the second pattern is quick Switching.In contrast, in the embodiment using two different threshold speeds, enclose in speed Around v1Fluctuate but less than v2In the case of, once PWTN has taken up the second pattern, Until speed is more than v during then PWTN will remain in the second pattern2Till.
In certain embodiments of the present invention, v1It is about 10 kilometers/hour and v2It is about 25 Kilometer/hour.Other speed are also available.
In some embodiments, PWTN 5 is operable to compare v when speed v exceedes2 Bigger third speed threshold value v3Time take the second operational mode.It should be appreciated that move at some In power power train 5, it is unable to more than a certain speed perform to run from first owing to system limits Pattern is to the transformation of the second operational mode.Therefore, if driven more than this speed in the first pattern While sailing, it is desirable to the second Mode change to improve one or more vehicle performance characteristics (such as Braking, turning or other characteristics), the most this transformation is impossible.
Therefore, in order to alleviate this problem, PWTN 5 be configured to when speed exceed equal to or Threshold velocity v less than the maximal rate that PWTN 5 can be converted to the second pattern3Time from Take the second pattern dynamicly.In some embodiments, PWTN 5 is arranged to when speed drops To less than v3But more than v2Threshold velocity v4The first operational mode is automatically readopted time following. As example, v3Can be (for example) 150km/h and v4Can be (for example) 120km/h.
Fig. 3 showed in the drive cycle phase for the vehicle according to another embodiment of the invention Between the car speed v of the function as the time and PWTN state SaCurve chart.Root According to the embodiment of Fig. 3, PWTN is configured to the most automatically take second (four Wheel drive) pattern.
As shown in this graph, at time t1Place, speed reduces to zero, and controller 40 controls PWTN 5 is to take the second operational mode (Sa=1).At time t2Place, vehicle leaves again Begin and sail (v increases from zero), and at time t3Place, speed exceedes threshold velocity v1.Once Speed is more than v1, then controller 40 control PWTN 5 with take the first operational mode until Till speed drops to zero again.In some embodiments, controller 40 is configured to control vehicle To take two-wheel drive operational mode when speed v exceedes about 15 kilometers/hour.Other speed are also It is available.
It should be appreciated that embodiments of the present invention have the advantage that when the vehicle is still, PWTN 5 is always in the second operational mode (four-wheel drive pattern).Therefore, no matter When vehicle starts running from resting state, is all whole four wheel drive vehicle of vehicle.This Have the advantage that can be substantially reduced vehicle experiences the wind of wheel-slip when from standing start Danger.
It should be appreciated that in the embodiment with landform response vehicle program of the present invention, Driver can select landform responder according to the environmental condition that driver's perception exists.So And, it is possible to, driver may not realize that the risk that there is wheel-slip on given surface, And in the case of not selecting suitable program, therefore attempt mobile vehicle.
Therefore, some embodiments of the present invention have the advantage that regardless of driver the most Selecting suitable vehicle program, vehicle the most all will attempt with four-wheel drive pattern rather than two-wheel drive Motion of defect modes.Therefore, if it is that requirement four-wheel drive runs that vehicle has stood on surface thereon Surface, then no matter vehicle program selected by driver how, vehicle the most all will be with four-wheel drive Pattern starts mobile.
Embodiments of the present invention can be useful the example of situation be vehicle parks on hayfield also And driver leaves the situation of vehicle.When vehicle is uncared for, meadow such as can due to precipitation Can become moist through so that when driver returns, need four-wheel drive to run to move vehicle.Drive The person of sailing may attempt to be suitable to institute do not run such as " meadow/gravel " landform response modes etc Mobile vehicle in the case of stating the special-purpose vehicle program of surface condition.But, when driver attempts to move During motor-car, no matter whether driver has selected for special-purpose vehicle program, and vehicle all will automatically Start mobile with four-wheel drive pattern.This causes the risk reduction of wheel-slip.
Therefore, embodiments of the present invention have the advantage that in spite of the most chosen suitable The vehicle program that driver selects, owing to vehicle is the most static, therefore vehicle all will automatically attempt to Move with four-wheel drive operational mode rather than two-wheel drive mode.
It should be appreciated that the damage such as caused due to the surface that vehicle is just attempted to travel thereon Bad, it is not intended to wheel-slip the most especially.Additionally, initially with two-wheel drive mould Even if the vehicle of formula experience wheel-slip selects four-wheel drive pattern also can become immovable subsequently.
It should be appreciated that in some embodiments, controller 40 can be such as owing to selecting Special-purpose vehicle program or be operable to not consider with four due to condition of other regulation any Wheel drive mode starts vehicle.
It should be appreciated that other power transmission series structures are also available.
Run through the described and claimed of this specification, word " include " and " comprising " and this The variant of a little words mean " including, but not limited to ", and be not intended to (and not) and get rid of Other parts, additive, parts, entirety or step.
Run through the described and claimed of this specification, unless the context otherwise requires, otherwise odd number Comprise plural number.Especially, in the case of using indefinite article, unless the context otherwise requires, Otherwise description should be understood to consider multiple and single.
Unless the most incompatible, otherwise combine certain aspects of the present disclosure, embodiment or example The part, entirety, feature, complex, chemical composition or the group that describe should be understood to answer For any other aspect, embodiment or example described in literary composition.
This application claims in UK Patent Application No. that on February 18th, 2011 submits to The priority of GB1102822.2, entire contents is expressly incorporated into herein.

Claims (18)

1. motor vehicles, have:
Mover device；
At least the first one or more wheel of group and second group of one or more wheel；And
PWTN, described PWTN is operable to described mover device is connected to institute State first group of one or more wheel and described second group of one or more wheel so that: when described dynamic When power power train is in the first operational mode, described first group of one or more wheel rather than described Two groups of moment of torsion transmission paths being attached to be derived from described mover device；And when described PWTN When being in the second operational mode, described first group of one or more wheel and described second group one or Multiple wheel both of which are attached to be derived from the moment of torsion transmission path of described mover device,
Described PWTN includes for being connected to be derived from described mover device by described second group Described moment of torsion transmission path slave part, described slave part include first releasable moment of torsion transmit Device and the second releasable torque transmission and prop shaft, the described first releasable moment of torsion passes Defeated device is operable to be connected to be derived from described prime mover by the first end of described prop shaft The described moment of torsion transmission path of device, the described second releasable torque transmission is operable to institute The second end stating prop shaft is connected to described second group of one or more wheel,
Described motor vehicles also include controlling device, and described control device is operable to control described the One releasable torque transmission and the described second releasable torque transmission are to transport described first Described PWTN is switched between row mode and described second operational mode so that: described first In operational mode, described prop shaft and the described moment of torsion being derived from described mover device transmit path Disconnect with described second group of one or more wheel both of which；And in described second operational mode In, described prop shaft and be derived from the described moment of torsion transmission path and described the of described mover device Two groups of one or more wheel both of which are connected,
Wherein, when in described first operational mode, described motor vehicles be operable in response to The speed of described motor vehicles controls described PWTN with from described first operational mode switching To described second operational mode.
Motor vehicles the most according to claim 1, described motor vehicles are operable to described Control described PWTN when speed is less than or equal to the first defined threshold velocity amplitude and take described Second operational mode.
Motor vehicles the most according to claim 2, described motor vehicles are operable to described Controlling described PWTN when motor vehicles are static or are in dead ship condition takes described second to run Pattern, the state that described dead ship condition is closed corresponding to described mover device.
4. according to the motor vehicles described in any one in claims 1 to 3, wherein, described motor-driven Vehicle is provided with the automatic transmission with " park " pattern and " neutral gear " pattern, described motor-driven Vehicle is arranged in described variator and is in selected from described " park " pattern and described " neutral gear " mould Control described PWTN time in a kind of pattern in formula and take described second operational mode.
Motor vehicles the most according to claim 2, wherein, described first defined threshold speed Value is not zero, and, described first defined threshold velocity amplitude is in the one in following scope Scope in: from 1 kilometer/hour to 50 kilometer/hour, from 1 kilometer/hour to 40 kilometer/ Hour, from 1 kilometer/hour to 30 kilometer/hour, from 1 kilometer/hour to 20 kilometer/hour, Public from 1 kilometer/hour to 15 kilometer/hour, from 1 kilometer/hour to 10 kilometer/hour, from 1 In/hour to 5 kilometers/hour, from 5 kilometers/hour to 10 kilometers/hour and from 5 kilometers/ Hour to 15 kilometers/hour.
Motor vehicles the most according to claim 5, described motor vehicle construction becomes in described speed It is increased to described first defined threshold velocity amplitude from described first defined threshold velocity amplitude value below Described first operational mode is taked time above.
Motor vehicles the most according to claim 5, described motor vehicle construction becomes in described speed Raise from the second defined threshold velocity amplitude value below bigger than described first defined threshold velocity amplitude Described first operational mode is taked time more than described second defined threshold velocity amplitude.
Motor vehicles the most according to claim 7, wherein, described first defined threshold speed Value equal to or less than 15 kilometers/hour, and, described second defined threshold more than 15 kilometers/little Time.
9., according to the motor vehicles described in claim 7 or 8, described motor vehicles are operable to Described speed is increased to described 3rd defined threshold speed from the 3rd defined threshold velocity amplitude value below Control described PWTN time more than angle value and take described second operational mode.
Motor vehicles the most according to claim 9, wherein, described 3rd defined threshold speed Value is more than described first defined threshold velocity amplitude.
11. motor vehicles according to claim 9, wherein, described 3rd defined threshold speed Value is more than described second defined threshold velocity amplitude.
12. motor vehicles according to claim 11, wherein, described PWTN can be grasped It is made and is reduced to described 4th regulation in described speed value more than the 4th defined threshold velocity amplitude Taking described first operational mode time below threshold speed value, described 4th defined threshold velocity amplitude is big In described second defined threshold velocity amplitude and less than described 3rd defined threshold velocity amplitude.
13. according to the motor vehicles described in any one in claims 1 to 3, wherein, when described It is described to take that motor vehicles control described PWTN in response to the speed of described motor vehicles During the second operational mode, described motor vehicles are operable to control described PWTN with one Being accomplished to the transformation of described second operational mode in period, the length of described period is in response to described machine The rate of change of the deceleration of motor-car.
14. motor vehicles according to claim 13, wherein, when described motor vehicles respond Speed in described motor vehicles controls described PWTN to take described second operational mode Time, it is described to be accomplished within a period that described motor vehicle construction becomes to control described PWTN The transformation of the second operational mode, the length of described period subtracts along with the increase of the rate of change of deceleration Little.
15. motor vehicles according to claim 2, wherein, described first defined threshold speed Value increases along with the increase of the rate of change of deceleration.
16. according to the motor vehicles described in any one in claims 1 to 3, wherein, and described At least one in one group of one or more wheel and described second group of one or more wheel includes one To or multipair wheel.
17. 1 kinds of methods controlling motor vehicles, including:
Thering is provided a kind of motor vehicles, described motor vehicles have PWTN, described power transmission System be operable to be connected to the mover device of described motor vehicles first group one or more Wheel and second group of one or more wheel so that: when described PWTN is in the first operation Time in pattern, described first group of one or more wheel rather than described second group of one or more wheel It is attached to be derived from the moment of torsion transmission path of described mover device；And at described PWTN Time in the second operational mode, described first group of one or more wheel and described second group one or Multiple wheel both of which are attached to be derived from the moment of torsion transmission path of described mover device, described power Power train includes that slave part, described slave part include the first releasable torque transmission and Two releasable torque transmission and prop shaft, the described first releasable torque transmission It is operable to be connected to be derived from described mover device by the first end of described prop shaft Described moment of torsion transmission path, the described second releasable torque transmission is operable to described The second end of prop shaft is connected to described second group of one or more wheel,
Described method includes controlling the described first releasable torque transmission and described second releasable Torque transmission is described with switching between described first operational mode and described second operational mode PWTN, thus in described first operational mode, makes described prop shaft and is derived from institute State the described moment of torsion transmission path of mover device and described second group of one or more both wheel All disconnect, and in described second operational mode, described prop shaft is connected to source Path and described second group of one or more car is transmitted from the described moment of torsion of described mover device Both wheels,
Described method include the speed in response to described motor vehicles to control described PWTN with It is switched to described second operational mode from described first operational mode.
18. 1 kinds of systems for vehicle, described vehicle has PWTN, and described power passes Dynamic system include prime mover, at least one pair of trailing wheel, for described prime mover is connected to described trailing wheel Axle and for prop shaft being optionally respectively connecting to described prime mover and described trailing wheel The first coupling arrangement and the second coupling arrangement, described system include control device, described control fill Put control institute in the operational mode being configured in the first operational mode and the second operational mode State the first coupling arrangement and the operation of described second coupling arrangement, in described first operational mode, Described prop shaft is made to disconnect with described prime mover and described trailing wheel both of which, described In two operational modes, described prime mover is connected to described trailing wheel by described prop shaft, described Control device to be arranged to be reduced to below predetermined threshold velocity in response to the speed of described vehicle and draw Send out from described first operational mode to the transformation of described second operational mode.
CN201280018956.3A 2011-02-18 2012-02-20 The method and system of the PWTN of vehicle and control vehicle Active CN103517820B (en)

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EP2675643A1 (en) 2013-12-25
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US9193262B2 (en) 2015-11-24
GB201102822D0 (en) 2011-04-06
GB2488527A (en) 2012-09-05
EP2675643B1 (en) 2018-01-03
WO2012110657A1 (en) 2012-08-23
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CN106004426A (en) 2016-10-12
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